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Showing content from https://github.com/pandas-dev/pandas/issues/49240 below:

pivot_table with margins=True on empty DataFrame results in ValueError · Issue #49240 · pandas-dev/pandas · GitHub

• I have checked that this issue has not already been reported.

• I have confirmed this bug exists on the latest version of pandas.

• I have confirmed this bug exists on the main branch of pandas.

import pandas as pd

pd.DataFrame({'A': [], 'B':[], 'C': []}).pivot_table(values='A', index='B', columns='C', margins=True)

pivot_table with margins=True on empty DataFrame results in ValueError.
This is an inconsistent behaviour, as pivot_table with margins=False returns empty dataframe.

Should return an empty DataFrame, same as with margins=False

commit : 91111fd
python : 3.10.0.final.0
python-bits : 64
OS : Windows
OS-release : 10
Version : 10.0.17763
machine : AMD64
processor : Intel64 Family 6 Model 85 Stepping 7, GenuineIntel
byteorder : little
LC_ALL : None
LANG : None
LOCALE : English_United States.1251

pandas : 1.5.1
numpy : 1.21.4
pytz : 2021.3
dateutil : 2.8.2
setuptools : 57.4.0
pip : 22.3
Cython : None
pytest : None
hypothesis : None
sphinx : None
blosc : None
feather : None
xlsxwriter : 3.0.3
lxml.etree : None
html5lib : None
pymysql : None
psycopg2 : None
jinja2 : 3.0.3
IPython : 7.30.1
pandas_datareader: None
bs4 : 4.11.1
bottleneck : None
brotli : None
fastparquet : None
fsspec : None
gcsfs : None
matplotlib : 3.5.0
numba : None
numexpr : None
odfpy : None
openpyxl : 3.0.9
pandas_gbq : None
pyarrow : None
pyreadstat : None
pyxlsb : None
s3fs : None
scipy : None
snappy : None
sqlalchemy : None
tables : None
tabulate : None
xarray : None
xlrd : None
xlwt : None
zstandard : None
tzdata : None

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